I thanked my lucky stars that no one took my bag when I stupidly left it on a park bench.
thank (one's) lucky stars
To express appreciation for a beneficial occurrence. You should thank your lucky stars that you managed to avoid that violent car accident.We thank our lucky stars that we were able to get a home in this neighborhood at such a reasonable price.
thank your lucky stars
feel grateful for your good fortune.
1998Times All Alec Stewart can do is thank his lucky stars that his main strike bowler is fit again.
thank your lucky ˈstars (that...)
be very grateful (that...): You should thank your lucky stars that you’re young and healthy.